This paper studies an unmanned aerial vehicle (UAV)-aided downlink sparse code multiple access (SCMA) sys-tem to serve multiple users under finite resources. The objective of this work is to maximize the average sum-rate of UAV-SCMA system by optimizing the three-dimensional (3D) UAV trajectory within the UAV energy and mobility constraints, and the inter-user interference in SCMA. The formulated problem is non-convex in nature, we reformulate it using logarithmic approximation and solve it iteratively. The simulation results validates that the proposed UAV 3D trajectory outperforms the benchmark schemes with around a 20% increase in the overall sum-rate under the available energy budget.
Trajectory Design for Sum-Rate Enhancement in UAV-SCMA System
2023-06-01
1241659 byte
Conference paper
Electronic Resource
English
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